Hard as tuba players in order to be heard. That is why piccolo players don't have to work as Sensitive to sounds between 1 and 4 kHz - about two to four octavesĪbove middle C. The reed opens and closes 29 times per second. When this note is played loudly, you mayīe able to hear the individual pulses of high pressure emitted as ![]() Sounds from about 15 Hz to 20 kHz (1 kHz = 1000 Hz). ![]() Treble clef, a vibration of 220 Hz is heard as the A one octaveīelow, 110 Hz as the A one octave below that and so on. The pitch of a note is almost entirely determinedīy the frequency: high frequency for high pitch and low for low.Ĥ40 vibrations per second (440 Hz) is heard as the note A in the Ultimately this sound wave causes a very tiny vibration in yourĪt any point in the air near the source of sound, the moleculesĪre moving backwards and forwards, and the air pressure varies upĪnd down by very small amounts. The disturbance in the air spreads out as a travelling sound wave. Of this air flows outwards, compressing the next layer of air. It compresses the air next to it, which raises its pressure. ![]() Gently on a loudspeaker you will feel it vibrate - if it is playingĪ low note loudly you can see it moving.
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